deep vlf metal detector

[godigit1]

Thank you,
You had said it is a manual ground balance so i was expecting you to have to pump the coil over the ground to balance.
What type of GB is it?

[ifrenide]

Hello ossama, any construction files? "schematic, PCB , coil parameters" if possible.
best regards.

[ossamaussama]

here is layout in sprint

[RING-N-THINGS]

How did you make the wire for the coil?

[Funfinder]

Super project, this is what we need - deeper detectors no matter how!

For your information:
The JeoHunter from Turkey which is non-motion induction balance was in 2009
already the following deep - because I have tested this exactly:

35x45cm coil:
Alu case 45x35cm from 2 meters in air.
cannonball 10cm from 80cm.
maximum detection: huge steel construction: 5 meters
(while turning around own axis)

Make the coil lightweight:
- use thin alu-wires with copper-coating and higher voltage
- use a circle coil with small stripe in the middle from up to down (detech coils style)

I said already since 5 years in this forum that we need 70cm coils for the
deep stuff! These 45-50cm things are just too small.

There exists special belts you can hook into the coil to make it more lightweight
Attached at your shoulders, they lift the whole stuff up.
Or you can use a small and heavy counterweight behind your back.

[ifrenide]

thank you ossama for the pcb layout, can you please give us the schematic to checkout the pcb, if there is any errors .
best regards.

[ossamaussama]

Super project, this is what we need - deeper detectors no matter how!

For your information:
The JeoHunter from Turkey which is non-motion induction balance was in 2009
already the following deep - because I have tested this exactly:

35x45cm coil:
Alu case 45x35cm from 2 meters in air.
cannonball 10cm from 80cm.
maximum detection: huge steel construction: 5 meters
(while turning around own axis)

Make the coil lightweight:
- use thin alu-wires with copper-coating and higher voltage
- use a circle coil with small stripe in the middle from up to down (detech coils style)

I said already since 5 years in this forum that we need 70cm coils for the
deep stuff! These 45-50cm things are just too small.

There exists special belts you can hook into the coil to make it more lightweight
Attached at your shoulders, they lift the whole stuff up.
Or you can use a small and heavy counterweight behind your back.

thanks man
for information

i find simple way is to use large polyester sheet with good thickness and i may design as concentrate coil not dd

[ossamaussama]

Hello ossama, any construction files? "schematic, PCB , coil parameters" if possible.
best regards.

pcb is attached in sprint
i will send you schematic

coil inductance i will measure and provide

[MartyJ1963]

@Ossamaussama,,,Could you please repost the Sprint Layout file,,,the 48.rar file I downloaded from here says 'No archives',,,Much appreciated,,Thanks,,Marty

[ossamaussama]

use winrar to open file

[ossamaussama]

here is some details
transistor with GSD pin is mosfet
other is is bjt transistor

[MartyJ1963]

I re-downloaded the file and tried 'Winrar' and other unzip software but it still says 'No archives',,Thanks,,,Marty

[mushaba]

The archive is broken or damaged...

[ossamaussama]

to all who ask about sechmatic
this metal detector is under modification to get better depth

i will share all information as soon as i reach the best of this machine

[ifrenide]

waiting you brother ossama . please don't be too late .thank you